Valve.



W. KIBSER.

VALVE.

APPLICATION IILBD OOT. 1,-1908.

Patented July 25, 1911.

1 W l1 1! I n Inventor-2 altelrser',

Witnesses:

WALTER KIESER, F BERLIN, GERMANY, ASSIGNOR T0 QENERAL ELECTRICICQMI'ANY,

seas.

A CORPORATION OF NEW YORK.

VALVE.

Specification of Letters Patent.

Parnassu 25, rear.

Application filed October 1, 1908. Serial No. 455,696. a

To' all whom it may concern:

Be it known*that I, WALTER Knzsnn, a citizen of Switzerland, residin at Berlin,

Germany, have invented certam new and useful Improvements in Valves, of which the following is a specification.

This invention relates to valves for controlling the flow of elastic fluid, such as steam, and its object is to reduce to a minimum the reactive eflect upon the mechanism for regulating the position of said valve, in order that a directly-acting regulator may be employed. To this end, the diameter of the valve is made as small as possible, and the valve-seat is so constructed as to produce a high speed in the stream of fluid passing through, even when the valve is wide open. If this speedis created gradually by means of what may be-called a convergent annular nozzle leading to the valveseat, and-then converted again gradually into pressure in a divergent or expanding nozzle leading away from said valve, only slight pressure losses will occur when the valve is fully open, notwithstanding the high speed and the small seat.

In the accompanying drawing, Figure 1 is a, longitudinal section of a valve employ- 1ngmy invention, the valve being shown wide open, and Fig. 2 is a similar view showing the valve closed.

The elastic fluid enters the valve casing through the inwardly converging nozzle 1 into an annular receiver 2 concentric with the valve-seat 3.- From this receiver, the fluid flows through a constricted annular mouth/l to the central chamber 5 in which 7 said chamber it passes to' the outwardly diverging outlet tube 8, in which the velocity is changed into pressure.

by Letters Patent of the United States, is,

1. A valvefor controlling the flow of fluid comprising a converging inlet nozzle which converts pressure into velocity, a diverging outlet nozzle which converts velocity into pressure, said nozzle having its axis at right angles to the axis of the inlet nozzle, an annular receiver surrounding the entrance to the diverging nozzle into which receiver the converging nozzle opens, a valve seat adjacent the entrance to the diverging nozzle, a cylindrical valve cooperating with the seat and having its axis in alinement with the axis of the diverging nozzle, and a stem for the'valve .which projects outwardly from the side of the valve opposite to the seat,'there being a passage through the valve for balancing the pressures thereon.

2. A valve for controlling the flow of fluid comprising a'flanged inlet, a flanged outlet, said inlet and outlet being of substantially the same size, a converging nozzle passage leading from the inlet, a diverging nozzle passage leading to the outlet and having an inlet that is smaller than the first cent the entrance to the diverging nozzle passage and communicating therewith, the converging nozzle passage also opening into said chamber through a passageismaller than the first mentioned inlet, a circular valve seatlsurrounding the opening between one of the nozzle assages and said chamber, acylindrical va ve cooperating with the seat and having its axis in alinement with the axis of said nozzle passage, a stem for the valve which projects outwardly from the side of the valve opposite the seat, and means for balancing'the pressures on the valve. In witness whereof, I have hereunto set my hand this 8th day of September, 1908.

WALTER KIQEfiER. Witnesses: I FRIEDRICH GANzER'r, O'r'ro ScHMrD'r.

mentioned inlet, an annular chamber adja+ 

